Amnesia: The Dark Descent

But I can't find it. In the beginning of the game when you have to make an acid to dissolve the organic tissue blocking a door to make progress. I have tried using test tubes, or placing a bottle under it, but every container I find has a cork in it. this is really breaking the immersion. =[

The container that you need is one that goes in your inventory. It's the chemistry pot. It should be somewhere in the laboratory on a desk.

Edit: As for the immersion, I'd like to imagine that only the chemistry pot got some special coating that's needed to hold the acid for more than a few seconds. After all, it's an extremely aggressive one.